Effects of Superplastic Deformation on Dynamic Hardness and Young's Modulus of 3Y-TZP(Mechanical Behavior of Materials 2)
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概要
- 論文の詳細を見る
There have been many studies on superplasticity in ceramics and its application is believed as a promising method to produce ceramic components of required shapes and sizes. The authors have investigated the superplastic deformation induced variations in mechanical properties of 3mol% yttria stabilized tetragonal zirconia polycrystals (3Y-TZP) in relation to its microstructure. Superplastically deformed specimens were prepared by a high temperature tensile test. Their morphological characteristics were examined by Scanning Electron Microscope (SEM). A micro-indentation test was carried out to evaluate mechanical properties at micro-regions of the specimens. As a result, the dynamic hardness and the Young's modulus are decreased with the increase in an average grain size caused by the deformation. From a statistical viewpoint, it is suggested that the crystal phase transformation in 3Y-TZP caused by the deformation is a crucial factor on the hardness change and that the deformation induced cavity formation is also an important factor on the apparent Young's modulus.
- 一般社団法人日本機械学会の論文
- 2001-10-20
著者
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Shibata Taiju
Department Of Advanced Nuclear Heat Technology Oarai Research Establishment Japan Atomic Energy Rese
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Motohashi Yoshinobu
Research Center For Superplasticity Faculty Of Engineering Ibaraki University
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Motohashi Yoshinobu
The Research Center For Superplasticity Faculty Of Enginering Ibaraki University
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Takahashi Tsuneo
Department Of Biochemistry And Molecular Biology Nihon University School Of Dentistry At Matsudo
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Ishihara Masahiro
Department Of Advanced Nuclear Heat Technology Oarai Research Establishment Japan Atomic Energy Rese
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Ishihara Masahiro
Department Of Advanced Nuclear Heat Technology Japan Atomic Energy Research Institute
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Takahashi Tsuneo
Department Of Advanced Nuclear Process Heat Technology Japan Atomic Energy Research Institute
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Takahashi Tsuneo
Department Of Advanced Nuclear Heat Technology Japan Atomic Energy Research Institute
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